Dance exercises in vehicle (5)
I believe the answer is:
caper
'dance' is the definition.
(I've seen this before)
'exercises in vehicle' is the wordplay.
'exercises' becomes 'pe'.
'in' indicates putting letters inside.
'vehicle' becomes 'car' (car is a kind of vehicle**).
'pe' going inside 'car' is 'CAPER'.
(Other definitions for caper that I've seen before include "Jump about playfully" , "Cooked and pickled flower bud" , "Skip or dance; escapade" , "Dance playfully" , "Frolic - bud used in cooking" .)